【摘要】 本文通过对凡口超大型铅锌矿床中不同类型方解石的REE、DTA和热发光标型研究，发现成矿期方解石的ΣREE总量、LREE／HREE比值较成岩期方解石高出2～10倍；矿石或矿化地层的DTA曲线多数表现为双峰或多峰，非矿化灰岩中方解石DTA曲线为单峰，方解石热分解温度在819～832℃之间；矿石中的方解石人工辐照热发光多数出现160，260，370℃左右的三峰，而地层中的方解石多数为160，370℃的双峰。依据方解石的标型特征，探讨了其成因意义。更多还原

【Abstract】 REE, DTA and thermoluminescence studies of different types of calcites from the Fankou superlarge Pb-Zn deposit show that the REE contents and LREE/HREE ratios of calcites in the stage of mineralization are 2~6 times those of calcites during diagenesis. The DTA curves of most calcites in ores or mineralized strata are of bimodal-multimodal distribution, whereas those in nonmineralized rocks are of unimodal distribution. Thermal decomposition temperatures of the calcites range from 819℃ to 832℃. N+B thermoluminescence of the most calcites in the ores show a trimodal distribution at 160, 260, 370℃ whereas those of calcites in the strata are marked by a bimodal distribution at 160, 370℃ The genetic types of ores are also discussed in the present paper in terms of the typomorphic characteristics of calcites.更多还原